of basel



Patented Apr. 18, 1933 UNITED STATES PATENT OFFICE INDU/STRY IIT'BASLE, or BAsELI SWITZERLAND PROCESS FOR PRINTING ACETATE SILK OR MATERIALS CONTAINING AN ORGANIC GELLULOSE ETHER- OR ESTER No Drawing; Application filed September 30, 1929, Serial No. 396,407, and in Switzerland October 12, 1928.

penetrate more or less through the material to be printed and at the same time to dye the back grey.

The

present invention is based on the observation that when acetate silk or material containing a colloid of the cellulose series of the group of the organic-esters or ethers of the cellulose is printed with such sulfonic acidsof aminoanthraquinones, the amino groups of which stand in the a-positions of the anthraquinone nucleus, and which contain aromatically bound sulfo groupsthe material is colored fast and full tints, while during the steaming operation there is no appreciable dyeing of the back greys. This fact is Very surprising, because in thecase of soluble dyestufi's it was more than ever to be expected that they would penetrate through the material to be printed. It is further to be remarked that, while the aminoanthraquinone sulfonic acids in question are yielding only weak dyeings which are of i no use, because the dyeing-baths are not sufficiently exhausted, the same sulfonic acids will behave very muchmore advantageously in printing, because essentially more productive prints are obtained.

'Among the sulfonic acids of amino anthraquinones in question there come into consideration particularly those which derive from 1:4-diamino-anthraquinone, and in which at least one of theamino-groups is substituted by an aryl or aralkyl residue. With such dyestuffs blue to green prints of remarkable beauty are obtained. The sulfonic acids of aminoanthraquinones may of course also carry other substituents besides the amino-groups, such as OH, halogen, O-alkyl, etc.;the sulfo-group may be in the anthraquinone nucleus or in a side-chain.-

F or example, 20 parts of the sodium salt of l-methylamino- 4 benzylamino-sulfonic acid of anthraquinone are finely ground in a suitable mill with 80 parts of water in Like results are obtained with the fol-- acid of a 1:4c-diarylido-anthraquinone; red

Violet with l-amino-4-hydroxyanthraquinone-5-sulfonic acid, and orange with l-aminoanthraquinone-5-sulfonic acid.

- The same results are quite generally ob tained with the group of textile materials which consist of the ester andthe ether of cellulose.

What I claim is 1. A process of printing the group of textile materials consisting of colloids of the cellulose series of the group of the organic esters and ethers of cellulose, which consists iii printing the material with such sulfonic acids of a-aminoanthraquinones Which contain aromatically bound sulfo groups, and then steaming the material.

2. A process of printing the textile materials consisting of organic cellulose esters, which consists in printing the material with such sulfonic acids of di-u aminoanthraquinones which contain aromatically bound sulfo groups, and then steaming the material.

3. A process of printing the textile ma- OSCAR 'BALLY, OF BASEL, SWITZERLAND, nssrenon "r0 SOCIETY or CHEMICAL terials consisting of cellulose acetate, which consists in printing the material with such sulfonic acids of 1 4-diaminoanthraquiriones which contain aromatically bound sulfo groups, and then steaming the material.

4. A process of printing acetate silk, which 7 consists in printing the material with such sulfonic acids of'l 4-diaminoanthraquinones which contain aromatically bound sulfo groups, and in-which at least one of the -NH -groups is substituted by an aryl 'or aralkyl residue, and then steaming the material. .7 i 5. A process of printing acetate silk, which consists in printing the material with such monosulfonic acids of 1:4-diaminoanthraquinones which contain aromatically bound sulfo groups and in which at least one of the NH -groups is substituted by an aryl or aralkyl residue, and then steaming the n material.

6. A process of printing acetate silk, which consists in printing the material with 1 amino- L y-acetyIaminO) phenylaminoanthraquinone-2-sulfonic acid and then steaming the material.

In witness whereof I have hereunto signed my name this 18th day of September OSCAR BALLY. 

